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CVE-2023-48732

Good to know:

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Date: January 2, 2024

Mattermost fails to scope the WebSocket response around notified users to a each user separately resulting in the WebSocket broadcasting the information about who was notified about a post to everyone else in the channel.

Language: Go

Severity Score

Related Resources (6)

https://github.com/advisories/GHSA-q7rx-w656-fwmv
https://nvd.nist.gov/vuln/detail/CVE-2023-48732
https://github.com/mattermost/mattermost
https://github.com/mattermost/mattermost/commit/851515be222160bee0a495c0d411056b19ed4111
https://mattermost.com/security-updates
https://www.mend.io/vulnerability-database/CVE-2023-48732

Severity Score

Weakness Type (CWE)

Exposure of Sensitive Information to an Unauthorized Actor

CWE-200

Insufficient Information

NVD-CWE-noinfo

Top Fix

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Upgrade Version

Upgrade to version github.com/mattermost/mattermost-server - v8.1.7+incompatible

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

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